For those who came to and returned from Shaanxi in high-risk areas and counties (cities, districts, flags, towns or streets of municipalities directly under the central government and sub-provincial cities), centralized isolation observation measures were taken 14 days (the isolation time was counted from the time when they left the above areas), and nucleic acid detection was carried out for four times (days 1, 3, 7, 13)
2. Those who come to Shaanxi and return to Shaanxi from other counties (cities, districts and banners) in the city where the middle and high-risk area is located shall pass through within 48 hours after checking the health code and the negative certificate of nucleic acid detection. 3. For those who travel in low-risk areas outside the above-mentioned areas, they are not allowed to return home with the "green code" health code, and they are not allowed to check the nucleic acid test certificate to effectively protect the normal travel needs of the masses.